I found one of the the method and DLL file which is being used in below code to generate the particular width and height of the QR code in Pay slip.
Note: please check your thermal or Zebra printer setting to print QR code image.
Declarations of Variables
Name DataType Subtype Length
EncodingOption DotNet ZXing.Common.EncodingOptions.'zxing, Version=0.16.6.0, Culture=neutral, PublicKeyToken=830ae994e36ac27d'
BarcodeWriter DotNet ZXing.BarcodeWriter.'zxing, Version=0.16.6.0, Culture=neutral, PublicKeyToken=830ae994e36ac27d'
Barcodeformat DotNet ZXing.BarcodeFormat.'zxing, Version=0.16.6.0, Culture=neutral, PublicKeyToken=830ae994e36ac27d'
BitMatrix DotNet ZXing.Common.BitMatrix.'zxing, Version=0.16.6.0, Culture=neutral, PublicKeyToken=830ae994e36ac27d'
QrCodeBitmap DotNet System.Drawing.Bitmap.'System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'
ImageFormat DotNet System.Drawing.Imaging.ImageFormat.'System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'
LOCAL GenerateQRCode(TexttoQR : Text) QRPath : Text
EncodingOption := EncodingOption.EncodingOptions();
EncodingOption.Height := 200;
EncodingOption.Width := 200;
BarcodeWriter := BarcodeWriter.BarcodeWriter();
BarcodeWriter.Format := Barcodeformat.QR_CODE;
BarcodeWriter.Options := EncodingOption;
BitMatrix := BarcodeWriter.Encode(TexttoQR);
QrCodeBitmap := BarcodeWriter.Write(BitMatrix);
ServerFileName:=COPYSTR(FileManagement.ServerTempFileName(BmpFormat),1,250);
QrCodeBitmap.Save(ServerFileName, ImageFormat.Bmp);
ClientFileName:=FileManagement.ClientTempFileName('');
FileManagement.DownloadToFile(ServerFileName,ClientFileName);
FileManagement.BLOBImport(TempBlob,ClientFileName);
FileManagement.BLOBImportFromServerFile(TempBlob, ClientFileName);
QRPath := FileManagement.BLOBExport(TempBlob, 'InvQrCode.jpg',FALSE);
EXIT(QRPath);